Last night I was adding some more RAM. I only had 1 512 stick in of the corsair valueselect pc3200 and was adding the second stick. Unplugged the power, put it in, anddddd nothing happens when I turn it on. So I take the 2nd stick out, leave the first one be. Go to turn it on, andddddd nothing happens again. I have 4 512mb sticks of this ram and have tried them all and have tried some in different slots, but everytime I go to turn it on, the power turns on but nothing happens.

Pull everything off the puter except the hard drive, memory and video card. Power the puter up with the original memory stick. If nothing happens I would suggest you try to convince a friend to temporarily allow to to use their power supply to see the result. If you add another working powrer supply and are running minimal devices at boot, your mobo is probably the culprit. I'll wager that it's the PSU. It's hard to imagine that you have 4 bad mem sticks!